Sprinkler coverage in a shower room in commercial building

Am inspecting the construction of a community building at a new upscale residential property. The building is required to be sprinkled. There is a shower room in this building. It is a separate room with a high ceiling with the shower head at about 6-7 ft off the ground. If you think of a shower in a locker room in which several people could be in it at once like the one we all use in high school gym class it would best describe this room. The question is whether it is required to be sprinkled under the requirements of NFPA 13. What section would require or allow for an exemption. Thank you.

The fourth is any non-combustible constructed room or area where the contents are completely/wholly non-combustible. A space with wholly non-combustible contents is very rare, as packing, wrappings, and most furnishing are combustible.

"""""The fourth is any non-combustible constructed room or area where the contents are completely/wholly non-combustible. A space with wholly non-combustible contents is very rare, as packing, wrappings, and most furnishing are combustible."""""

This is not in NFPA 13.

It is in the IFC.

In 2015 it is 903.3.1.1.1

BUT, to use the exception, it says automatic fire detection is required in the room.